Today I gave a lecture on First-order phase transitions including a derivation of the Clausius-Clapeyron relation.
Students particularly like watching the video of the barrel crush. I also use the video as the basis for a tutorial and sometimes exam questions. It is a nice way to illustrate how big the slope of the liquid-vapour phase boundary is.
They also enjoy the ice bomb video.
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Tony Leggett (1938-2026): condensed matter theorist
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